The malformed-drawing rollback test took its marker baseline before the
malformed poll but only checked it after resizeAgain(). Resize redraws
the accepted view on its own, so the test still passed with the
immediate rollback redraw removed and the canvas left blank until the
operator resized.
Record the log position alongside the baseline and assert the retained
markers are on the canvas immediately after the malformed poll, before
any resize. Scoped to the drawing case, since the events and lanes
cases fail before draw() starts and correctly do not redraw.
Mutating the implementation confirms the assertion bites: disabling the
rollback draw and removing it entirely both fail it with the message
"the rollback must redraw the retained markers immediately".
Test-only change. control-plane-view-ui 27/27, control-plane-view
13/13, control-plane-view-ui-a11y 18/18, ESLint clean on the test file.
pasmud
a85f43b1fa